Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What output results when calling a derived-class method that manipulates members not yet initialized, due to a constructor call in the base class?

Runtime error
Compiler error
Undefined behavior
Correct output

The correct answer is: Undefined behavior

Calling a derived-class method that manipulates members not yet initialized can lead to undefined behavior because the members have not been initialized yet. This can result in unpredictable output and potentially cause unexpected results in the program. It is important to ensure that all members are properly initialized before accessing or manipulating them in methods. Options A and B, runtime error and compiler error, respectively, may also occur in this scenario depending on the specific implementation. Option D, correct output, is not likely as the members are not yet initialized.